1. Circle Geometry and Theorems
By Jonathan and Aislinn
Circle Geometry and Theorems

2. Task A - diameter
Circle diameter.

3. Task a - chord
Circle chord.

4. TASK A - tangent
Circle tangent

5. Task A
This is an isosceles triangle. Because two of the sides are the same and the third one is not.

6. Task B – angles subtended from the diameter
We noticed that angle D is 90 degrees.

7. TASK B – ANGLES IN THE SAME SEGMENT
Circle theorem of chords
Angles subtended from the same segment of a chord are always the same.
“ Given a chord all angles from that chord are equal”

8. Task b – angles subtended at the centre
“For any chord the angle subtended at the centre is twice that subtended at the perimeter.”

9. Task b – angles in a cyclic quadrilateral
“Opposite angles of a cyclic quadrilateral add up to 180 degrees”

10. Task b – angles between tangent and radius
The angle is 90 degrees when the line touches the circle at certain point.